B737 flight crew has TCASII TA during visual approach to phx.

Attributes
ACN	585629
Time
Date	200306
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phx.airport
State Reference	AZ
Altitude	msl bound lower : 3000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : p50.tracon tower : phx.tower
Operator	common carrier : air carrier
Make Model Name	B737-500
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : traffic pattern arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : p50.tracon tower : phx.tower
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 218 flight time total : 8290 flight time type : 3800
ASRS Report	585629
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure other spatial deviation
Independent Detector	other controllerb other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance controller : issued advisory controller : separated traffic flight crew : took precautionary avoidance action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 9000 vertical : 1000
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

On radar vector downwind to runway 25L abeam phx airport at 6000 ft MSL 210 KTS, approach control instructed us to slow to 180 KTS, then descend to 4000 ft MSL. No traffic to follow call was given. Abeam the power plant at 5000 ft MSL/180 KTS, approach control cleared us for the visual approach and to switch to tower frequency. Again, no traffic to follow call was given. PNF made the base call to tower as the turn was started. Phx tower asked if we had been told to follow traffic. At the same time, I visually acquired aircraft Y approaching the power plant on a straight-in final at approximately 3000 ft MSL. I began to level above 4000 ft MSL and slowed the turn to lag behind aircraft Y. Tower asked if we could follow aircraft Y to land on runway 25R. PNF replied in the affirmative. We then fully configured the aircraft for landing on base, lagged behind aircraft Y to roll out on final for runway 25R. Traffic landing on runway 26 was also visually acquired while on base (aircraft Z), but was never a factor since runway 25R centerline was not crossed. Received a TCASII TA from both aircraft on base leg. After rolling out on final. The remainder of the flight was uneventful. A TA to follow aircraft Y on final to runway 25L from phx approach and better visual lookout (clearing of runway 25L final) would have prevented a turn to base at that point and prevented the traffic conflict.

Original NASA ASRS Text

Title: B737 FLT CREW HAS TCASII TA DURING VISUAL APCH TO PHX.

Narrative: ON RADAR VECTOR DOWNWIND TO RWY 25L ABEAM PHX ARPT AT 6000 FT MSL 210 KTS, APCH CTL INSTRUCTED US TO SLOW TO 180 KTS, THEN DSND TO 4000 FT MSL. NO TFC TO FOLLOW CALL WAS GIVEN. ABEAM THE PWR PLANT AT 5000 FT MSL/180 KTS, APCH CTL CLRED US FOR THE VISUAL APCH AND TO SWITCH TO TWR FREQ. AGAIN, NO TFC TO FOLLOW CALL WAS GIVEN. PNF MADE THE BASE CALL TO TWR AS THE TURN WAS STARTED. PHX TWR ASKED IF WE HAD BEEN TOLD TO FOLLOW TFC. AT THE SAME TIME, I VISUALLY ACQUIRED ACFT Y APCHING THE PWR PLANT ON A STRAIGHT-IN FINAL AT APPROX 3000 FT MSL. I BEGAN TO LEVEL ABOVE 4000 FT MSL AND SLOWED THE TURN TO LAG BEHIND ACFT Y. TWR ASKED IF WE COULD FOLLOW ACFT Y TO LAND ON RWY 25R. PNF REPLIED IN THE AFFIRMATIVE. WE THEN FULLY CONFIGURED THE ACFT FOR LNDG ON BASE, LAGGED BEHIND ACFT Y TO ROLL OUT ON FINAL FOR RWY 25R. TFC LNDG ON RWY 26 WAS ALSO VISUALLY ACQUIRED WHILE ON BASE (ACFT Z), BUT WAS NEVER A FACTOR SINCE RWY 25R CTRLINE WAS NOT CROSSED. RECEIVED A TCASII TA FROM BOTH ACFT ON BASE LEG. AFTER ROLLING OUT ON FINAL. THE REMAINDER OF THE FLT WAS UNEVENTFUL. A TA TO FOLLOW ACFT Y ON FINAL TO RWY 25L FROM PHX APCH AND BETTER VISUAL LOOKOUT (CLRING OF RWY 25L FINAL) WOULD HAVE PREVENTED A TURN TO BASE AT THAT POINT AND PREVENTED THE TFC CONFLICT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.